Oil-filter.



N0. 159L835. Patented Jan. 28, I902.

H. 'B. WYMAN.

OIL FILTER.

(Application filed Jan. 28, 1901.

(No Model.)

UNITED STATES PATENT I CF ICE.

HORACE B. WYMAN, OF LEOMINSTER, MASSACHUSETTS, ASSIGNOR TO THE OIL SAVING MANUFACTURING COMPANY, OF PORTLAND, MAINE, A COR- PoEATIo'N or MAINE.

OIL-FILTER.

SPECIFICATION forming part of Letters Patent No. 691,835, dated January 28, 1902. Application filed January 28,1901. Serial No. 45,126. [No model.)

To all whom, it may concern:

Be it known that I, HORACE B. WYMAN,

a citizen of the United States, residing at Leominster, in thecounty of Worcester and 5 State ofMassachusetts,have invented certain new and useful Improvements in Oil-Filters, of which the following is a specification.

My invention relates to improvements in oil-filters, more especially for cleansing and I purifying waste oil which has been used in lubricating machinery or for other purposes, and has for its object to provide a device which is simple and inexpensive in construction, effective in use, and which will remove r all dirt or other foreign matter from the oil and clean and deliver the oil in a purified state.

The invention consists in the features and combination of features, as hereinafter more fully described and claimed.

Referring to the drawings, Figure l is a central vertical section of my invention. Fig. 2 is a top plan view of same.

In the drawings,in which like letters and un- 2 5 merals of reference denote like parts throughout both views, A represents the casing of the oil-filter,divided into a series of compartments B, C, and D, the compartment B having a cover B and at its upper end a Waste-oil receiver E, provided with an inclined bottom F and a pipe G, depending from the same,'hav

ing a turned-up end H. A perforated plate or strainer I is supported in the waste-oil receiver just above the inclined bottom F of 5 the same.

J is a partition which extends across the compartment B and upward to the point K just below the bottom of the waste-oil receptacle and forms an oil-passage L between 0 said partition J and the division-wall M between the compartments B and C. The division-wall M terminates at its lower end at the point N for the purpose of forming an opening 0 below the same and is turned in- 5 ward and formed into a ledge P. The compartment C is provided with a partition Q, extending across the same and upward to the point Q and provided with ledgesR and B, one near the center and the other near the lower end of the said partition Q.

S is a filter adapted to be supported on the minating at the point X, and a downwardly- I inclined bottom Y. A wall Z extends downwardly from the top of the compartment C to the point 1 and then turned laterally to form a ledge 2.

3 is a channel formed between the partition X of the compartment W and the wall Z of compartment C. l

4: is a filter adapted to be supported on the;

ledges 2 and R and composed of a series of layers or sheets of felt or fibrous material 5 7o and perforated plates or wire screens 6.

The inner wall R of the compartment D extends downward to the point 7 and is then turned laterally and formed into a ledge 8. j

9 is a ledge which projects laterally from 7 5 the outer wall 10 of the compartment D.

.11 is a filter adapted to be supported on the ledges 8 and 9 of compartment D and composed of one or more layers or sheets of felt or fibrous material 12 and perforated plates or wire screens13. 4

R is a channel between partition Q and wall B A faucet 14 for drawing off the purified oil is provided at the lower end of the compartment D.

Each compartment is provided with a pipe 15, which may have a suitable valve for drawing off all sediment that maycollect in said compartment.

16 is a cover for the compartments C and D.

The compartment B is filled with water, brine, or other liquid 17 up to about the point 18.

It will be noticed that the upper edge of the vertical partition X of compartment W is lower than the upper edge of the partition J of the compartment B and. the upper edge of the partition Qof compartment C'is lower than the upper edge of the partition X of I00 compartment W. I

The oil after being filtered and used over many times will separate into two parts-thick flakes of residuum and pure oil. These flakes will not settle and will work through the filtor-beds and collect on inclined partitions and accumulate any dirt or grit that may pass through the beds. They will then come off in large flakes and pass on through the filter, carrying the collection of dirt with them, breaking up to accumulate again after passing through the next filter-bed. To avoid this accummulation, I make all partitions vertical, thereby keeping these fine flakes always in solution or mixed with the oil as much as possible until they become solid, when they are taken out of the oil by the filter-beds.

I do not wish to be limited to the precise construction as herein shown and described, as the same may be varied somewhat without departing from the spirit of my invention.

The operation is as follows: The oil is introduced into the waste-oil receiver through a pipe or in any other desired manner and passes through the perforated plate or strainer, down the inclined bottom F, through pipe out at the end H of said pipe, up through t e water 17, and then the oil will accumulate 0 top of the water until it flows over the upper edge of the partition J. Then it will go down the channel L, under the lower edge of the Wall M, up through the filter S, thence over the upper edge of partition X, down the channel 3, under the lower edge of wall Z, up through the filter 4, over the upper edge of partition Q, down the channel R under the lower edge of wall R up through the filter 11, into the compartment D. Thus it will be seen that the waste oil passes first through a body of water, then through a filter composed of pulverized glass or grit, and finally through filters composed of a series of layers of felt or fibrous material, and by the time it has gone through the last filter it will be thoroughly purified and cleansed and be ready for use.

Having thus described my invention, what I claim isa 1. An oil-filter comprising a compartment having a water filter, a compartment having a filter of pulverized glass and a filter of felt,

a compartment having a filter of felt, and means of communication between said compartments, substantially as shown and described.

2. An oil-filter comprising a compartment having an oil-receiver with an inclined bottom, a pipe extending downward from said bottom having its lower end turned upward, a compartment provided with a filter and having a compartment therein with a filter, a compartment provided with a filter, and channels for communication between said com partments, substantially as shown and de scribed.

3. An oil-filter comprising a series of com partments, each provided with a filtering medium, one of said compartments provided with a compartment therein having an in clined bottom and a filter, and channels for communication between said compartments, substantially as shown and described.

4. An oil-filter provided with a compartment having water therein, and provided with an oil-receiver having a pipe for feeding said oil to the bottom of said compartment, a compartment provided with a filter, and having a smaller compartment therein provided with a filter, a compartment provided with means for drawing off the purified oil, and channels whereby communication is had between said compartments, substantially as shown and described.

5. An oil-filter provided with a compart ment having brine therein and an oil-receiver having a pipe for feeding the oil to the bottom of said compartment, a compartment provided with a filtering medium of fine grit, and having a smaller compartment therein provided with a filtering medium and a com partment provided with a filtering medium and means for drawing off the purified oil, and channels whereby communication is had between said compartments, substantially as shown and described.

In testimony whereof I hereto affix my signature in the presence of two witnesses.

HORACE n. WYMAN.

lVitnesses:

FRED L. PERRY, ALTON F. SUTFEN. 

